/usr/bin/java -ea -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/Mono3_1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-34549b5 [2022-04-08 04:07:47,690 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-08 04:07:47,692 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-08 04:07:47,727 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-08 04:07:47,739 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-08 04:07:47,741 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-08 04:07:47,742 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-08 04:07:47,744 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-08 04:07:47,744 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-08 04:07:47,745 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-08 04:07:47,747 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-08 04:07:47,751 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-08 04:07:47,752 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-08 04:07:47,753 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-08 04:07:47,754 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-08 04:07:47,754 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-08 04:07:47,767 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-08 04:07:47,769 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-08 04:07:47,774 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-08 04:07:47,774 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-08 04:07:47,776 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-08 04:07:47,776 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-04-08 04:07:47,783 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-08 04:07:47,784 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-08 04:07:47,785 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-08 04:07:47,785 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-08 04:07:47,785 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-08 04:07:47,785 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-08 04:07:47,785 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-08 04:07:47,785 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-08 04:07:47,785 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-08 04:07:47,786 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-08 04:07:47,786 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-08 04:07:47,786 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-08 04:07:47,786 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-08 04:07:47,786 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-08 04:07:47,786 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-08 04:07:47,786 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-08 04:07:47,786 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-08 04:07:47,786 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-08 04:07:47,787 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-08 04:07:47,787 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-08 04:07:47,787 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-08 04:07:47,787 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-08 04:07:47,787 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-08 04:07:47,787 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-08 04:07:47,787 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-04-08 04:07:47,787 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-08 04:07:47,985 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-08 04:07:48,000 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-08 04:07:48,002 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-08 04:07:48,003 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-08 04:07:48,004 INFO L275 PluginConnector]: CDTParser initialized [2022-04-08 04:07:48,005 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/Mono3_1.c [2022-04-08 04:07:48,058 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1bdb31de/23ce92a68e6c40cca963dce50851ae20/FLAG1ff037c95 [2022-04-08 04:07:48,435 INFO L306 CDTParser]: Found 1 translation units. [2022-04-08 04:07:48,436 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/Mono3_1.c [2022-04-08 04:07:48,440 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1bdb31de/23ce92a68e6c40cca963dce50851ae20/FLAG1ff037c95 [2022-04-08 04:07:48,449 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1bdb31de/23ce92a68e6c40cca963dce50851ae20 [2022-04-08 04:07:48,451 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-08 04:07:48,452 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-08 04:07:48,453 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-08 04:07:48,453 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-08 04:07:48,456 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-08 04:07:48,457 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.04 04:07:48" (1/1) ... [2022-04-08 04:07:48,458 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12143c22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 04:07:48, skipping insertion in model container [2022-04-08 04:07:48,458 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.04 04:07:48" (1/1) ... [2022-04-08 04:07:48,462 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-08 04:07:48,474 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-08 04:07:48,620 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/Mono3_1.c[311,324] [2022-04-08 04:07:48,630 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-08 04:07:48,636 INFO L203 MainTranslator]: Completed pre-run [2022-04-08 04:07:48,647 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/Mono3_1.c[311,324] [2022-04-08 04:07:48,649 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-08 04:07:48,660 INFO L208 MainTranslator]: Completed translation [2022-04-08 04:07:48,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 04:07:48 WrapperNode [2022-04-08 04:07:48,660 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-08 04:07:48,661 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-08 04:07:48,661 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-08 04:07:48,661 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-08 04:07:48,671 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 04:07:48" (1/1) ... [2022-04-08 04:07:48,671 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 04:07:48" (1/1) ... [2022-04-08 04:07:48,678 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 04:07:48" (1/1) ... [2022-04-08 04:07:48,678 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 04:07:48" (1/1) ... [2022-04-08 04:07:48,683 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 04:07:48" (1/1) ... [2022-04-08 04:07:48,686 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 04:07:48" (1/1) ... [2022-04-08 04:07:48,686 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 04:07:48" (1/1) ... [2022-04-08 04:07:48,687 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-08 04:07:48,688 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-08 04:07:48,688 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-08 04:07:48,688 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-08 04:07:48,689 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 04:07:48" (1/1) ... [2022-04-08 04:07:48,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-08 04:07:48,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-08 04:07:48,709 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-04-08 04:07:48,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-04-08 04:07:48,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-08 04:07:48,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-08 04:07:48,743 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-08 04:07:48,743 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-08 04:07:48,743 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-08 04:07:48,743 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-08 04:07:48,743 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-08 04:07:48,743 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-08 04:07:48,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-08 04:07:48,744 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-08 04:07:48,744 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-08 04:07:48,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-08 04:07:48,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-08 04:07:48,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-08 04:07:48,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-08 04:07:48,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-08 04:07:48,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-08 04:07:48,785 INFO L234 CfgBuilder]: Building ICFG [2022-04-08 04:07:48,787 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-08 04:07:48,880 INFO L275 CfgBuilder]: Performing block encoding [2022-04-08 04:07:48,885 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-08 04:07:48,885 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-08 04:07:48,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.04 04:07:48 BoogieIcfgContainer [2022-04-08 04:07:48,886 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-08 04:07:48,887 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-08 04:07:48,888 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-08 04:07:48,890 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-08 04:07:48,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.04 04:07:48" (1/3) ... [2022-04-08 04:07:48,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64c9aa3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.04 04:07:48, skipping insertion in model container [2022-04-08 04:07:48,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 04:07:48" (2/3) ... [2022-04-08 04:07:48,891 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64c9aa3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.04 04:07:48, skipping insertion in model container [2022-04-08 04:07:48,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.04 04:07:48" (3/3) ... [2022-04-08 04:07:48,892 INFO L111 eAbstractionObserver]: Analyzing ICFG Mono3_1.c [2022-04-08 04:07:48,895 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-08 04:07:48,895 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-08 04:07:48,924 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-08 04:07:48,928 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-08 04:07:48,929 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-08 04:07:48,941 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-08 04:07:48,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-08 04:07:48,947 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 04:07:48,947 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 04:07:48,948 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 04:07:48,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 04:07:48,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1326077006, now seen corresponding path program 1 times [2022-04-08 04:07:48,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 04:07:48,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1388616135] [2022-04-08 04:07:48,965 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-08 04:07:48,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1326077006, now seen corresponding path program 2 times [2022-04-08 04:07:48,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 04:07:48,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420454722] [2022-04-08 04:07:48,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 04:07:48,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 04:07:49,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 04:07:49,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-08 04:07:49,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 04:07:49,101 INFO L290 TraceCheckUtils]: 0: Hoare triple {28#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(10, 2);call #Ultimate.allocInit(12, 3); {23#true} is VALID [2022-04-08 04:07:49,101 INFO L290 TraceCheckUtils]: 1: Hoare triple {23#true} assume true; {23#true} is VALID [2022-04-08 04:07:49,102 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {23#true} {23#true} #41#return; {23#true} is VALID [2022-04-08 04:07:49,103 INFO L272 TraceCheckUtils]: 0: Hoare triple {23#true} call ULTIMATE.init(); {28#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-08 04:07:49,104 INFO L290 TraceCheckUtils]: 1: Hoare triple {28#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(10, 2);call #Ultimate.allocInit(12, 3); {23#true} is VALID [2022-04-08 04:07:49,104 INFO L290 TraceCheckUtils]: 2: Hoare triple {23#true} assume true; {23#true} is VALID [2022-04-08 04:07:49,104 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {23#true} {23#true} #41#return; {23#true} is VALID [2022-04-08 04:07:49,104 INFO L272 TraceCheckUtils]: 4: Hoare triple {23#true} call #t~ret7 := main(); {23#true} is VALID [2022-04-08 04:07:49,104 INFO L290 TraceCheckUtils]: 5: Hoare triple {23#true} ~x~0 := 0;~y~0 := 0; {23#true} is VALID [2022-04-08 04:07:49,105 INFO L290 TraceCheckUtils]: 6: Hoare triple {23#true} assume !true; {24#false} is VALID [2022-04-08 04:07:49,105 INFO L272 TraceCheckUtils]: 7: Hoare triple {24#false} call __VERIFIER_assert((if 0 != ~y~0 % 4294967296 then 1 else 0)); {24#false} is VALID [2022-04-08 04:07:49,105 INFO L290 TraceCheckUtils]: 8: Hoare triple {24#false} ~cond := #in~cond; {24#false} is VALID [2022-04-08 04:07:49,105 INFO L290 TraceCheckUtils]: 9: Hoare triple {24#false} assume 0 == ~cond; {24#false} is VALID [2022-04-08 04:07:49,106 INFO L290 TraceCheckUtils]: 10: Hoare triple {24#false} assume !false; {24#false} is VALID [2022-04-08 04:07:49,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-08 04:07:49,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 04:07:49,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420454722] [2022-04-08 04:07:49,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420454722] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 04:07:49,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 04:07:49,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-08 04:07:49,109 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 04:07:49,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1388616135] [2022-04-08 04:07:49,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1388616135] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 04:07:49,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 04:07:49,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-08 04:07:49,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667235445] [2022-04-08 04:07:49,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 04:07:49,114 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-04-08 04:07:49,115 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 04:07:49,118 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 04:07:49,131 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 11 edges. 11 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 04:07:49,131 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-08 04:07:49,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 04:07:49,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-08 04:07:49,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-08 04:07:49,169 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 04:07:49,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 04:07:49,258 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2022-04-08 04:07:49,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-08 04:07:49,259 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-04-08 04:07:49,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 04:07:49,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 04:07:49,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 35 transitions. [2022-04-08 04:07:49,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 04:07:49,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 35 transitions. [2022-04-08 04:07:49,268 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 3 states and 35 transitions. [2022-04-08 04:07:49,315 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 35 edges. 35 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 04:07:49,320 INFO L225 Difference]: With dead ends: 31 [2022-04-08 04:07:49,321 INFO L226 Difference]: Without dead ends: 14 [2022-04-08 04:07:49,323 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-08 04:07:49,325 INFO L913 BasicCegarLoop]: 20 mSDtfsCounter, 12 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-08 04:07:49,326 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 23 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-08 04:07:49,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-04-08 04:07:49,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-04-08 04:07:49,346 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 04:07:49,346 INFO L82 GeneralOperation]: Start isEquivalent. First operand 14 states. Second operand has 14 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 04:07:49,347 INFO L74 IsIncluded]: Start isIncluded. First operand 14 states. Second operand has 14 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 04:07:49,347 INFO L87 Difference]: Start difference. First operand 14 states. Second operand has 14 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 04:07:49,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 04:07:49,349 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2022-04-08 04:07:49,349 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-04-08 04:07:49,350 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 04:07:49,350 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 04:07:49,350 INFO L74 IsIncluded]: Start isIncluded. First operand has 14 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 14 states. [2022-04-08 04:07:49,350 INFO L87 Difference]: Start difference. First operand has 14 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 14 states. [2022-04-08 04:07:49,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 04:07:49,352 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2022-04-08 04:07:49,352 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-04-08 04:07:49,353 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 04:07:49,353 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 04:07:49,353 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 04:07:49,353 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 04:07:49,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 04:07:49,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2022-04-08 04:07:49,355 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 11 [2022-04-08 04:07:49,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 04:07:49,356 INFO L478 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2022-04-08 04:07:49,356 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 04:07:49,356 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 14 states and 15 transitions. [2022-04-08 04:07:49,373 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 15 edges. 15 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 04:07:49,374 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-04-08 04:07:49,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-08 04:07:49,375 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 04:07:49,375 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 04:07:49,376 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-08 04:07:49,376 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 04:07:49,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 04:07:49,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1315918275, now seen corresponding path program 1 times [2022-04-08 04:07:49,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 04:07:49,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [253030867] [2022-04-08 04:07:49,378 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-08 04:07:49,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1315918275, now seen corresponding path program 2 times [2022-04-08 04:07:49,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 04:07:49,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621195849] [2022-04-08 04:07:49,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 04:07:49,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 04:07:49,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 04:07:49,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-08 04:07:49,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 04:07:49,468 INFO L290 TraceCheckUtils]: 0: Hoare triple {155#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(10, 2);call #Ultimate.allocInit(12, 3); {149#true} is VALID [2022-04-08 04:07:49,468 INFO L290 TraceCheckUtils]: 1: Hoare triple {149#true} assume true; {149#true} is VALID [2022-04-08 04:07:49,469 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {149#true} {149#true} #41#return; {149#true} is VALID [2022-04-08 04:07:49,469 INFO L272 TraceCheckUtils]: 0: Hoare triple {149#true} call ULTIMATE.init(); {155#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-08 04:07:49,469 INFO L290 TraceCheckUtils]: 1: Hoare triple {155#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(10, 2);call #Ultimate.allocInit(12, 3); {149#true} is VALID [2022-04-08 04:07:49,470 INFO L290 TraceCheckUtils]: 2: Hoare triple {149#true} assume true; {149#true} is VALID [2022-04-08 04:07:49,470 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {149#true} {149#true} #41#return; {149#true} is VALID [2022-04-08 04:07:49,470 INFO L272 TraceCheckUtils]: 4: Hoare triple {149#true} call #t~ret7 := main(); {149#true} is VALID [2022-04-08 04:07:49,470 INFO L290 TraceCheckUtils]: 5: Hoare triple {149#true} ~x~0 := 0;~y~0 := 0; {154#(= main_~x~0 0)} is VALID [2022-04-08 04:07:49,471 INFO L290 TraceCheckUtils]: 6: Hoare triple {154#(= main_~x~0 0)} assume !(~x~0 % 4294967296 < 1000000); {150#false} is VALID [2022-04-08 04:07:49,471 INFO L272 TraceCheckUtils]: 7: Hoare triple {150#false} call __VERIFIER_assert((if 0 != ~y~0 % 4294967296 then 1 else 0)); {150#false} is VALID [2022-04-08 04:07:49,471 INFO L290 TraceCheckUtils]: 8: Hoare triple {150#false} ~cond := #in~cond; {150#false} is VALID [2022-04-08 04:07:49,471 INFO L290 TraceCheckUtils]: 9: Hoare triple {150#false} assume 0 == ~cond; {150#false} is VALID [2022-04-08 04:07:49,472 INFO L290 TraceCheckUtils]: 10: Hoare triple {150#false} assume !false; {150#false} is VALID [2022-04-08 04:07:49,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-08 04:07:49,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 04:07:49,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621195849] [2022-04-08 04:07:49,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621195849] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 04:07:49,472 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 04:07:49,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-08 04:07:49,473 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 04:07:49,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [253030867] [2022-04-08 04:07:49,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [253030867] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 04:07:49,473 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 04:07:49,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-08 04:07:49,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473278631] [2022-04-08 04:07:49,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 04:07:49,474 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-04-08 04:07:49,474 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 04:07:49,474 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 04:07:49,486 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 11 edges. 11 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 04:07:49,486 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-08 04:07:49,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 04:07:49,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-08 04:07:49,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-08 04:07:49,487 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 04:07:49,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 04:07:49,580 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2022-04-08 04:07:49,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-08 04:07:49,580 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-04-08 04:07:49,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 04:07:49,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 04:07:49,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 29 transitions. [2022-04-08 04:07:49,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 04:07:49,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 29 transitions. [2022-04-08 04:07:49,584 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 4 states and 29 transitions. [2022-04-08 04:07:49,612 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 29 edges. 29 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 04:07:49,615 INFO L225 Difference]: With dead ends: 25 [2022-04-08 04:07:49,615 INFO L226 Difference]: Without dead ends: 17 [2022-04-08 04:07:49,615 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-08 04:07:49,619 INFO L913 BasicCegarLoop]: 12 mSDtfsCounter, 13 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-08 04:07:49,620 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 19 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-08 04:07:49,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-04-08 04:07:49,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2022-04-08 04:07:49,627 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 04:07:49,627 INFO L82 GeneralOperation]: Start isEquivalent. First operand 17 states. Second operand has 16 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 04:07:49,627 INFO L74 IsIncluded]: Start isIncluded. First operand 17 states. Second operand has 16 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 04:07:49,628 INFO L87 Difference]: Start difference. First operand 17 states. Second operand has 16 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 04:07:49,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 04:07:49,629 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2022-04-08 04:07:49,629 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2022-04-08 04:07:49,629 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 04:07:49,629 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 04:07:49,629 INFO L74 IsIncluded]: Start isIncluded. First operand has 16 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 17 states. [2022-04-08 04:07:49,629 INFO L87 Difference]: Start difference. First operand has 16 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 17 states. [2022-04-08 04:07:49,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 04:07:49,631 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2022-04-08 04:07:49,631 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2022-04-08 04:07:49,631 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 04:07:49,631 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 04:07:49,631 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 04:07:49,631 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 04:07:49,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 04:07:49,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2022-04-08 04:07:49,632 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 11 [2022-04-08 04:07:49,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 04:07:49,633 INFO L478 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2022-04-08 04:07:49,633 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 04:07:49,633 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 16 states and 17 transitions. [2022-04-08 04:07:49,649 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 17 edges. 17 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 04:07:49,650 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2022-04-08 04:07:49,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-04-08 04:07:49,650 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 04:07:49,650 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 04:07:49,651 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-08 04:07:49,651 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 04:07:49,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 04:07:49,652 INFO L85 PathProgramCache]: Analyzing trace with hash 644646283, now seen corresponding path program 1 times [2022-04-08 04:07:49,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 04:07:49,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [668081399] [2022-04-08 04:07:51,193 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-08 04:07:51,196 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: free variables [|v_main_#t~post4_4|, |v_main_#t~post6_4|] at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.(UnmodifiableTransFormula.java:97) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:324) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.PredicateHelper.normalizeTerm(PredicateHelper.java:201) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolationCore.acceleratedInterpolationCoreIsCorrect(AcceleratedInterpolationCore.java:254) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:190) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleAcceleratedInterpolation.construct(IpTcStrategyModuleAcceleratedInterpolation.java:80) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:595) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:414) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:349) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:331) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:412) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-04-08 04:07:51,200 INFO L158 Benchmark]: Toolchain (without parser) took 2747.34ms. Allocated memory was 217.1MB in the beginning and 317.7MB in the end (delta: 100.7MB). Free memory was 160.3MB in the beginning and 262.2MB in the end (delta: -101.9MB). Peak memory consumption was 42.4MB. Max. memory is 8.0GB. [2022-04-08 04:07:51,201 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 217.1MB. Free memory is still 176.3MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-08 04:07:51,201 INFO L158 Benchmark]: CACSL2BoogieTranslator took 207.17ms. Allocated memory was 217.1MB in the beginning and 317.7MB in the end (delta: 100.7MB). Free memory was 160.2MB in the beginning and 289.1MB in the end (delta: -128.9MB). Peak memory consumption was 8.8MB. Max. memory is 8.0GB. [2022-04-08 04:07:51,202 INFO L158 Benchmark]: Boogie Preprocessor took 26.49ms. Allocated memory is still 317.7MB. Free memory was 289.1MB in the beginning and 287.6MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-08 04:07:51,202 INFO L158 Benchmark]: RCFGBuilder took 198.44ms. Allocated memory is still 317.7MB. Free memory was 287.6MB in the beginning and 276.9MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-04-08 04:07:51,205 INFO L158 Benchmark]: TraceAbstraction took 2311.31ms. Allocated memory is still 317.7MB. Free memory was 276.5MB in the beginning and 262.2MB in the end (delta: 14.3MB). Peak memory consumption was 57.7MB. Max. memory is 8.0GB. [2022-04-08 04:07:51,209 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 217.1MB. Free memory is still 176.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 207.17ms. Allocated memory was 217.1MB in the beginning and 317.7MB in the end (delta: 100.7MB). Free memory was 160.2MB in the beginning and 289.1MB in the end (delta: -128.9MB). Peak memory consumption was 8.8MB. Max. memory is 8.0GB. * Boogie Preprocessor took 26.49ms. Allocated memory is still 317.7MB. Free memory was 289.1MB in the beginning and 287.6MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 198.44ms. Allocated memory is still 317.7MB. Free memory was 287.6MB in the beginning and 276.9MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 2311.31ms. Allocated memory is still 317.7MB. Free memory was 276.5MB in the beginning and 262.2MB in the end (delta: 14.3MB). Peak memory consumption was 57.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: free variables [|v_main_#t~post4_4|, |v_main_#t~post6_4|] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: free variables [|v_main_#t~post4_4|, |v_main_#t~post6_4|]: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.(UnmodifiableTransFormula.java:97) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-04-08 04:07:51,240 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...